Security Information / 2013 / Security Information -- DSA-2650-2 libvirt

Debian Security Advisory

DSA-2650-2 libvirt -- files and device nodes ownership change to kvm group

Date Reported:

17 Mar 2013

Affected Packages:

libvirt

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 701649.
In Mitre's CVE dictionary: CVE-2013-1766.

More information:

Bastian Blank discovered that libvirtd, a daemon for management of virtual machines, network and storage, would change ownership of devices files so they would be owned by user libvirt-qemu and group kvm, which is a general purpose group not specific to libvirt, allowing unintended write access to those devices and files for the kvm group members.

For the stable distribution (squeeze), this problem has been fixed in version 0.8.3-5+squeeze5.

For the testing distribution (wheezy), this problem has been fixed in version 0.9.12-11.

For the unstable distribution (sid), this problem has been fixed in version 0.9.12-11.

We recommend that you upgrade your libvirt packages.